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经营范围
发明名称
Improvements in or relating to electronic amplifier valves
摘要
申请公布号
GB455650(A)
申请公布日期
1936.10.26
申请号
GB19350012560
申请日期
1935.04.26
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;NOEL MEYER RUST;GEORGE FAIRBURN BRETT
发明人
分类号
H01J21/02
主分类号
H01J21/02
代理机构
代理人
主权项
地址
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